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path: root/drivers/iommu/msm_iommu.c
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2018-07-10iommu: Remove IOMMU_OF_DECLARERob Herring
Now that we use the driver core to stop deferred probe for missing drivers, IOMMU_OF_DECLARE can be removed. This is slightly less optimal than having a list of built-in drivers in that we'll now defer probe twice before giving up. This shouldn't have a significant impact on boot times as past discussions about deferred probe have given no evidence of deferred probe having a substantial impact. Cc: Robin Murphy <robin.murphy@arm.com> Cc: Kukjin Kim <kgene@kernel.org> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Rob Clark <robdclark@gmail.com> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Frank Rowand <frowand.list@gmail.com> Cc: linux-arm-kernel@lists.infradead.org Cc: iommu@lists.linux-foundation.org Cc: linux-samsung-soc@vger.kernel.org Cc: linux-arm-msm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Cc: devicetree@vger.kernel.org Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-17iommu: Clean up of_iommu_init_fnRobin Murphy
Now that no more drivers rely on arbitrary early initialisation via an of_iommu_init_fn hook, let's clean up the redundant remnants. The IOMMU_OF_DECLARE() macro needs to remain for now, as the probe-deferral mechanism has no other nice way to detect built-in drivers before they have registered themselves, such that it can make the right decision. Reviewed-by: Sricharan R <sricharan@codeaurora.org> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2018-01-17iommu/msm: Claim bus ops on probeRobin Murphy
Since the MSM IOMMU driver now probes via DT exclusively rather than platform data, dependent masters should be deferred until the IOMMU itself is ready. Thus we can do away with the early initialisation hook to unconditionally claim the bus ops, and instead do that only once an IOMMU is actually probed. Furthermore, this should also make the driver safe for multiplatform kernels on non-MSM SoCs. Reviewed-by: Sricharan R <sricharan@codeaurora.org> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2017-08-10iommu/msm: Add iommu_group supportRobin Murphy
As the last step to making groups mandatory, clean up the remaining drivers by adding basic support. Whilst it may not perfectly reflect the isolation capabilities of the hardware, using generic_device_group() should at least maintain existing behaviour with respect to the API. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2017-02-10iommu: Remove iommu_register_instance interfaceJoerg Roedel
And also move its remaining functionality to iommu_device_register() and 'struct iommu_device'. Cc: Rob Herring <robh+dt@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: devicetree@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Joerg Roedel <jroedel@suse.de>
2017-02-10iommu/msm: Make use of iommu_device_register interfaceJoerg Roedel
Register the MSM IOMMUs to the iommu core and add sysfs entries for that driver. Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-06-21iommu/msm: use generic ARMV7S short descriptor pagetable opsSricharan R
This iommu uses the armv7 short descriptor format. So use the generic ARMV7S pagetable ops instead of rewriting the same stuff in the driver. Signed-off-by: Sricharan R <sricharan@codeaurora.org> Tested-by: Archit Taneja <architt@codeaurora.org> Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-06-21iommu/msm: Add support for generic master bindingsSricharan R
This adds the xlate callback which gets invoked during device registration from DT. The master devices gets added through this. Signed-off-by: Sricharan R <sricharan@codeaurora.org> Tested-by: Archit Taneja <architt@codeaurora.org> Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-06-21iommu/msm: Move the contents from msm_iommu_dev.c to msm_iommu.cSricharan R
There are only two functions left in msm_iommu_dev.c. Move it to msm_iommu.c and delete the file. Signed-off-by: Sricharan R <sricharan@codeaurora.org> Tested-by: Archit Taneja <architt@codeaurora.org> Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-06-21iommu/msm: Add DT adaptationSricharan R
The driver currently works based on platform data. Remove this and add support for DT. A single master can have multiple ports connected to more than one iommu. master | | | ------------------------ | | IOMMU0 IOMMU1 | | ctx0 ctx1 ctx0 ctx1 This association of master and iommus/contexts were previously represented by platform data parent/child device details. The client drivers were responsible for programming all of the iommus/contexts for the device. Now while adapting to generic DT bindings we maintain the list of iommus, contexts that each master domain is connected to and program all of them on attach/detach. Signed-off-by: Sricharan R <sricharan@codeaurora.org> Tested-by: Archit Taneja <architt@codeaurora.org> Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-08-13iommu/msm: Use BUG_ON instead of if () BUG()Joerg Roedel
Found by a coccicheck script. Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-03-31iommu/msm: Make use of domain_alloc and domain_freeJoerg Roedel
Implement domain_alloc and domain_free iommu-ops as a replacement for domain_init/domain_destroy. Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-12-02Merge branches 'arm/omap', 'arm/msm', 'arm/rockchip', 'arm/renesas', ↵Joerg Roedel
'arm/smmu', 'x86/vt-d', 'x86/amd' and 'core' into next Conflicts: drivers/iommu/arm-smmu.c
2014-11-04iommu: Add iommu_map_sg() functionOlav Haugan
Mapping and unmapping are more often than not in the critical path. map_sg allows IOMMU driver implementations to optimize the process of mapping buffers into the IOMMU page tables. Instead of mapping a buffer one page at a time and requiring potentially expensive TLB operations for each page, this function allows the driver to map all pages in one go and defer TLB maintenance until after all pages have been mapped. Additionally, the mapping operation would be faster in general since clients does not have to keep calling map API over and over again for each physically contiguous chunk of memory that needs to be mapped to a virtually contiguous region. Signed-off-by: Olav Haugan <ohaugan@codeaurora.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-10-23iommu/msm: Deletion of unnecessary checks before clk_disable()SF Markus Elfring
A semantic patch approach was proposed with the subject "[PATCH with Coccinelle?] Deletion of unnecessary checks before specific function calls" on 2014-03-05. https://lkml.org/lkml/2014/3/5/344 http://article.gmane.org/gmane.comp.version-control.coccinelle/3513/ This patch pattern application was repeated with the help of the software "Coccinelle 1.0.0-rc22" on the source files for Linux 3.17.1. An extract of the automatically generated update suggestions is shown here. It was determined that the affected source code places call functions which perform input parameter validation already. It is therefore not needed that a similar safety check is repeated at the call site. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-09-25iommu/msm: Convert to iommu_capable() API functionJoerg Roedel
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2014-07-07iommu: Constify struct iommu_opsThierry Reding
This structure is read-only data and should never be modified. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2013-08-06iommu/msm: Move mach includes to iommu directoryStephen Boyd
Two header files exist in mach-msm's include/mach directory that are only used by the MSM iommu driver. Move these files to the iommu driver directory and prefix them with "msm_". This allows us to compile the MSM iommu driver on multi-platform kernels. Acked-by: Joerg Roedel <joro@8bytes.org> Cc: Stepan Moskovchenko <stepanm@codeaurora.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org>
2013-04-02iommu/fsl: Make iova dma_addr_t in the iommu_iova_to_phys API.Varun Sethi
This is required in case of PAMU, as it can support a window size of up to 64G (even on 32bit). Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2012-07-11iommu/msm: Implement DOMAIN_ATTR_GEOMETRY attributeJoerg Roedel
Implement the attribute for the MSM IOMMU driver. Acked-by: David Brown <davidb@codeaurora.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-01-30iommu/msm: Fix error handling in msm_iommu_unmap()Joerg Roedel
Error handling in msm_iommu_unmap() is broken. On some error conditions retval is set to a non-zero value which causes the function to return 'len' at the end. This hides the error from the user. Zero should be returned in those error cases. Cc: David Brown <davidb@codeaurora.org> Cc: Stepan Moskovchenko <stepanm@codeaurora.org> Cc: stable@vger.kernel.org # >= 3.1 Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Acked-by: David Brown <davidb@codeaurora.org>
2011-11-10iommu/msm: announce supported page sizesOhad Ben-Cohen
Let the IOMMU core know we support 4KiB, 64KiB, 1MiB and 16MiB page sizes. This way the IOMMU core can split any arbitrary-sized physically contiguous regions (that it needs to map) as needed. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: David Brown <davidb@codeaurora.org> Cc: Stepan Moskovchenko <stepanm@codeaurora.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-11-10iommu/core: stop converting bytes to page order back and forthOhad Ben-Cohen
Express sizes in bytes rather than in page order, to eliminate the size->order->size conversions we have whenever the IOMMU API is calling the low level drivers' map/unmap methods. Adopt all existing drivers. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Cc: David Brown <davidb@codeaurora.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Joerg Roedel <Joerg.Roedel@amd.com> Cc: Stepan Moskovchenko <stepanm@codeaurora.org> Cc: KyongHo Cho <pullip.cho@samsung.com> Cc: Hiroshi DOYU <hdoyu@nvidia.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-10-21iommu/msm: Use bus_set_iommu instead of register_iommuJoerg Roedel
Convert the MSM IOMMU driver for ARM to use the new interface for publishing the iommu_ops. Acked-by: David Brown <davidb@codeaurora.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-09-05iommu/msm: ->unmap() should return order of unmapped pageOhad Ben-Cohen
Users of the IOMMU API (kvm specifically) assume that iommu_unmap() returns the order of the unmapped page (on success). Fix msm_iommu_unmap() accordingly. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Cc: Stepan Moskovchenko <stepanm@codeaurora.org> Cc: David Brown <davidb@codeaurora.org> Acked-by: David Brown <davidb@codeaurora.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-21msm: iommu: move to drivers/iommu/Ohad Ben-Cohen
This should ease finding similarities with different platforms, with the intention of solving problems once in a generic framework which everyone can use. Compile-tested for MSM8X60. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: David Brown <davidb@codeaurora.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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